Table 3: Mean values of clay, silt, Fe, K, and Ca contents in soil at different topographic positions for different abundance of Imperata.

ClaySiltFe KCa
%(ppm)cmol kg−1

SUMA 9c5b3277.87b0.02b3.32a
M10b6a1506.75c0.01c2.84b
H14a6a3509.50a0.04a3.28a

<0.00010.006<0.0001<0.0001<0.0001

USA14b5b2584.94a0.05b2.87a
M12a4c654.08c0.03c2.90a
H13b8a2330.99b0.08a2.88a

<0.0001<0.0001<0.0001<0.00010.272

MSA10a4b2366.19a0.18c2.00c
M7c5a1018.08c0.30a2.19b
H9b3c2046.45b0.23b2.44a

<0.0001<0.0001<0.0001<0.0001<0.0001

FSA10a9c591.65c0.36b2.87a
M10a11a4498.86a0.41a2.02c
H9b10b1269.39b0.21c2.25b

<0.0001<0.0001<0.0001<0.0001<0.0001

SUM: Summit; US: upper slope; MS: middle slope; FS: foot slope; A: absent; M: moderate density; H: high density; are indicating mean values that are significantly different.